A review of micro/nano welding and its future developments

Area of Science:

• Materials Science and Engineering
• Nanotechnology
• Mechanical Engineering

Background:

• Miniaturization and microsystems demand advanced joining techniques at the micro/nano scale.
• Existing methods face challenges with precision and contamination at smaller scales.

Purpose of the Study:

• To review the state-of-the-art in micro/nano scale welding and joining.
• To discuss optimal equipment, future applications, and research directions.
• To introduce novel techniques like micro/nano laser and electron beam welding.

Main Methods:

• Comprehensive literature review of micro/nano welding and joining.
• Analysis of applications in microelectromechanical systems (MEMS), micro total-analysis systems (microTAS), and carbon nanotubes (CNTs).
• Exploration of advanced techniques including laser and electron beam welding/joining.

Main Results:

• Identification of key factors for successful micro/nano welding and joining.
• Discussion of necessary machine improvements for nano-scale operations, emphasizing contamination control.
• Anticipation of future applications for laser and electron beam techniques.

Conclusions:

• Micro/nano welding and joining are critical for advancing miniaturized technologies.
• Further R&D is needed to integrate micro/nano scale progress with miniaturization efforts.
• Advanced techniques and improved machinery are essential for future success.